/* ── 天和钧窑 · 动效（慢、稳、有余韵） ── */

:root {
  --reveal-duration: 0.7s;
  --reveal-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* 滚动显现 */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--reveal-duration) var(--reveal-ease),
    transform var(--reveal-duration) var(--reveal-ease);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--left {
  transform: translateX(-24px);
}

.reveal--left.is-visible {
  transform: translateX(0);
}

.reveal--right {
  transform: translateX(24px);
}

.reveal--right.is-visible {
  transform: translateX(0);
}

.reveal--scale {
  transform: scale(0.96);
}

.reveal--scale.is-visible {
  transform: scale(1);
}

.reveal--fade {
  transform: none;
}

/* 交错延迟 */
.reveal-stagger > .reveal:nth-child(1) { transition-delay: 0s; }
.reveal-stagger > .reveal:nth-child(2) { transition-delay: 0.08s; }
.reveal-stagger > .reveal:nth-child(3) { transition-delay: 0.16s; }
.reveal-stagger > .reveal:nth-child(4) { transition-delay: 0.24s; }
.reveal-stagger > .reveal:nth-child(5) { transition-delay: 0.32s; }
.reveal-stagger > .reveal:nth-child(6) { transition-delay: 0.4s; }
.reveal-stagger > .reveal:nth-child(7) { transition-delay: 0.48s; }
.reveal-stagger > .reveal:nth-child(8) { transition-delay: 0.56s; }
.reveal-stagger > .reveal:nth-child(9) { transition-delay: 0.64s; }
.reveal-stagger > .reveal:nth-child(10) { transition-delay: 0.72s; }
.reveal-stagger > .reveal:nth-child(11) { transition-delay: 0.8s; }
.reveal-stagger > .reveal:nth-child(12) { transition-delay: 0.88s; }

/* 金线展开 */
.line-reveal {
  width: 0;
  height: 1px;
  background: var(--color-jun-gold);
  transition: width 0.9s var(--reveal-ease);
}

.line-reveal.is-visible,
.section-header__line.line-reveal.is-visible,
.page-hero__line.line-reveal.is-visible {
  width: 48px;
}

/* Hero 入场 */
.hero-enter .hero__en {
  opacity: 0;
  transform: translateY(12px);
  animation: heroFade 0.9s var(--reveal-ease) 0.15s forwards;
}

.hero-enter .hero__title {
  opacity: 0;
  transform: translateY(20px);
  animation: heroFade 1s var(--reveal-ease) 0.35s forwards;
}

.hero-enter .hero__subtitle {
  opacity: 0;
  transform: translateY(16px);
  animation: heroFade 0.9s var(--reveal-ease) 0.55s forwards;
}

.hero-enter .hero__actions {
  opacity: 0;
  transform: translateY(12px);
  animation: heroFade 0.8s var(--reveal-ease) 0.75s forwards;
}

.hero-enter .hero__bg {
  animation: heroBg 1.4s var(--reveal-ease) forwards;
}

@keyframes heroFade {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroBg {
  from {
    transform: scale(1.06);
  }
  to {
    transform: scale(1);
  }
}

/* 页头滚动态 */
.site-header {
  transition:
    background 0.35s var(--reveal-ease),
    box-shadow 0.35s var(--reveal-ease),
    border-color 0.35s var(--reveal-ease);
}

.site-header.is-scrolled {
  background: rgba(253, 252, 250, 0.97);
  box-shadow: 0 2px 20px rgba(44, 36, 32, 0.06);
}

/* 导航下划线滑动 */
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--color-jun-purple);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.35s var(--reveal-ease);
}

.site-nav a.is-active::after,
.site-nav a:hover::after {
  transform: scaleX(1);
}

.site-nav a.is-active::after {
  /* 覆盖 components 里的伪元素冲突 */
}

/* Logo 微动 */
.site-logo__mark {
  transition: transform 0.45s var(--reveal-ease), border-color 0.35s;
}

.site-logo:hover .site-logo__mark {
  transform: rotate(-4deg) scale(1.04);
  border-color: var(--color-jun-purple);
}

/* 按钮光感 */
.btn-primary,
.btn-secondary,
.btn-ghost-light {
  position: relative;
  overflow: hidden;
}

.btn-primary::before,
.btn-secondary::before,
.btn-ghost-light::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(255, 255, 255, 0.12) 50%,
    transparent 60%
  );
  transform: translateX(-100%);
  transition: transform 0.6s var(--reveal-ease);
}

.btn-primary:hover::before,
.btn-secondary:hover::before,
.btn-ghost-light:hover::before {
  transform: translateX(100%);
}

/* 作品卡片釉光 */
.work-card__media-inner {
  position: relative;
}

.work-card__media-inner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 30%,
    rgba(255, 255, 255, 0.08) 50%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.5s var(--reveal-ease);
}

.work-card:hover .work-card__media-inner::after {
  opacity: 1;
  animation: glazeSweep 1.2s var(--reveal-ease);
}

@keyframes glazeSweep {
  from {
    transform: translateX(-40%);
  }
  to {
    transform: translateX(40%);
  }
}

.work-card__title {
  transition: color 0.35s var(--reveal-ease);
}

.work-card:hover .work-card__title {
  color: var(--color-jun-purple);
}

/* 大师卡 */
.master-card__media {
  transition: box-shadow 0.45s var(--reveal-ease), transform 0.45s var(--reveal-ease);
}

.master-card:hover .master-card__media {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.master-card__name {
  transition: color 0.35s;
}

.master-card:hover .master-card__name {
  color: var(--color-jun-purple);
}

/* 新闻行 */
.news-item {
  transition: background 0.35s var(--reveal-ease), padding-left 0.35s var(--reveal-ease);
}

.news-item:hover {
  background: rgba(61, 43, 79, 0.03);
  padding-left: 8px;
}

/* 理念区 */
.philosophy__item {
  transition: transform 0.45s var(--reveal-ease);
}

.philosophy__item:hover {
  transform: translateY(-4px);
}

.philosophy__item-title::after {
  content: "";
  display: block;
  width: 24px;
  height: 1px;
  margin: 12px auto 0;
  background: var(--color-jun-gold);
  transform: scaleX(0);
  transition: transform 0.45s var(--reveal-ease);
}

.philosophy__item:hover .philosophy__item-title::after {
  transform: scaleX(1);
}

/* Tab / Pill 切换 */
.purpose-tab,
.meaning-pill {
  transition:
    color 0.35s var(--reveal-ease),
    background 0.35s var(--reveal-ease),
    border-color 0.35s var(--reveal-ease),
    transform 0.25s var(--reveal-ease);
}

.meaning-pill:active,
.purpose-tab:active {
  transform: scale(0.97);
}

/* 移动菜单 */
.mobile-nav {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity 0.35s var(--reveal-ease),
    transform 0.35s var(--reveal-ease),
    visibility 0.35s;
  display: block;
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* 回到顶部 */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 32px;
  z-index: 80;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  color: var(--color-jun-purple);
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.4s var(--reveal-ease);
  box-shadow: var(--shadow-sm);
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  border-color: var(--color-jun-purple);
  box-shadow: var(--shadow-md);
}

/* 页面进入淡入 */
.page-enter {
  animation: pageEnter 0.55s var(--reveal-ease);
}

@keyframes pageEnter {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal--left,
  .reveal--right,
  .reveal--scale {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-enter .hero__en,
  .hero-enter .hero__title,
  .hero-enter .hero__subtitle,
  .hero-enter .hero__actions,
  .hero-enter .hero__bg,
  .page-enter {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .line-reveal {
    width: 48px;
  }
}